To verify the feasibility of rock breakage with abrasive air jet, the effect of abrasive water jet and abrasive air jet on rock breaking is compared and analyzed. Abrasive jet machining ajm, also known as abrasive microblasting, pencil blasting and micro abrasive blasting, is an abrasive blasting machining process that uses abrasives propelled by a high velocity gas to erode material from the workpiece. A series of drilling tests were carried out on glass workpieces using sand as the abrasive powder. In abrasive jet machining, fine abrasive particles typically 0. It is the material removal process where the material is removed by high velocity stream of air gas or water and abrasive mixture. Ajm is mainly used to machine hard raw material, produce complex shape. Free download latest mechanical engineering projects of abrasive jet machine with report and project ppt, download free mechanical project of abrasive jet machining process is the metal removal process and is a process, in which removed from the work piece due to impingement fine grain abrasive by high velocity gas stream.
In this paper, the mechanism of abrasive acceleration in abrasive water jet and the abrasive air jet is theoretically investigated. Seminar abrasive jet machining full report download learn mech. Air, nitrogen and carbon dioxide to propel the abrasive particles. Productsservices for abrasive jet machining pdf abrasive jet and waterjet cutting machines 100 companies abrasive jet and waterjet cutting machines are used to cut sheet materials or remove materials from a surface by generating a focused stream of fluid mixed with abrasive particles. Difference between grinding and milling the abrasive grains in the wheel are much smaller and more numerous than the teeth on a milling cutter. Abrasive jet machining ajm, also known as micro abrasive blasting, is a mechanical energy based unconventional machining process used to remove unwanted material from a given workpiece the process makes use of an abrasive jet with high velocity, to remove material and provide smooth surface finish to hard metallic workpieces. The feed rate of abrasive air is controlled by the amplitude of vibration of the. Influence of nozzle design and process parameters on. The batcher makes possible the batching of abrasive from 0 to 500 gmin1. Report abrasive water jet cutting please fill this form, we will try to respond as soon as. In a machining operation, the output parameter is achieved by controlling various input parameters. High velocity impact of an abrasive particle causes a tiny brittle fracture on the work surface and the flowing gases carries away the dislodged small workpiece particle. The smaller size particles are used for obtaining good surface finish and precision. List of factors that can affect abrasive jet machining performance is given here.
A new asjm system was developed and used to machine blind holes and smooth. Common applications of abrasive jet machining process are provided below. High velocity jet is aimed at a surface under controller condition. Seminar abrasive jet machining full report download. Abrasivejet machining ajm modern machining process. Today we will learn about abrasive jet machining principle, working, equipments, application, advantages and disadvantages with its diagram. In this paper, the optimization of process parameters of two conventional and four advanced machining processes is investigated. The casted head reduces vibration and delivers precise cutting for years. Pdf as abrasive jet machining ajm is similar to sand blasting and effectively removes hard and brittle. Gas may be supplied either from a compressor or a cylinder.
The versatility of the abrasive water jet in cutting almost any engineering material is a very special feature of this technology. Abrasive jet machining free download as powerpoint presentation. Pdf a study of effect of process parameters of abrasive jet. Common uses include cutting heatsensitive, brittle, thin, or. Factors related to abrasive, carrier gas, abrasive jet, nozzle, work material, and process parameters and their influences are briefly discussed here. Ultrasonic machining process usm, water jet machining.
List of factors that affect abrasive jet machining performance. Water jet machining uses water mixed with abrasive materials projected with high pressure typically 0. Process characteristics of abrasive jet machining ijert. In this machining fine abrasive grades or particles in a jet of inert gas hit the work piece at very high velocity usually in the order of 200400 msec. Abrasive water jet machining is a nontraditional machining process, which makes use of the principles of abrasive jet machining ajm and water jet machining wjm. Ppt abrasive waterjet machining powerpoint presentation. Basic idea of abrasive jet machining ajm abrasive used. Water jet machining working principle, advantages and. Focusing tube, compressing air introduced with the abrasives, and as heat. We can cut any difficult shapes and create holes in glass and brittle material using compressed air and abrasive particles. Ajm should be avoided if work material is soft and ductile. The cutter is commonly connected to a highpressure water pump, where the water is then ejected from the nozzle, cutting through the material by spraying it with the jet. In abrasivejet machining ajm material is removed by the impact of a high velocity stream of gases and abrasive mixture focused on to the workpiece.
In order to cut harder materials like metals or granite, an abrasive material is mixed in the water. This abrasive jet machining project is used for cutting any integrated shapes on brittle materials like glass. The numerical relationship between abrasive kinetic energy and inlet pressure of abrasive water jet. Comparison of the rock breakage pressure of abrasive water. The abrasive jet machining process involves the application of a highspeed stream of abrasive particles assisted by the pressurized air on. Analysis and parametric optimization of abrasive hot air jet machining for glass using taguchi method and utility concept. Types of abrasive machining processes grinding honing lapping superfinishing polishing buffing abrasive water jet machining ultrasonic machining. Abrasives used are aluminium oxide, silicon carbide, glass powder and sodium carbonate.
Abrasive jet machining working, advantages, disadvantages. Magnetic abrasive finishingmaf seminar report pdf ppt download. Cavity depth depends on work piece feed rate, abrasive particle mass or density and pressure or velocity of the jet. The machine has one cutting head a2 for the water jet machining and for the abrasive water jet machining. In abrasive jet machining ajm, a focused stream of fine abrasive.
Description download abrasive water jet cutting comments. Abrasive jet machining is a nonconventional machining method. Abrasive jet machining ajm by nishtha chouksey 0201ip121045 introduction abrasive jet machining is the material removal process where the material is removed by high velocity stream of air gas or water and abrasive mixture. The abrasive jet machining is the process of impinging the highspeed stream of abrasive particles by highpressure gas or air on the work surface through a nozzle and metal removal occurs due to erosion caused by highspeed abrasive particles. Abrasive jet machining this vedio explains simply how the abrasive jet machining works,working principles. On this channel you can get education and knowledge for general issues and topics. A compressor is used which is connected through pu pipe to control valve. An abrasive is small, hard particle having sharp edges and an irregular shape. Abrasive water jet cutting is an extended version of water jet cutting. Although aij systems have shown great promise in metal removal and machining applications, so far, they have not made any. Get an overview of ajm process, mechanism, parameters, equipment, mrr, accuracy, capability, pros and cons, applications, controlling, etc. Abrasive jet machining ajm utilizes a high velocity jet of abrasives to remove material from work surface by impact erosion.
It is to be noted that, irrespective of the purpose, abrasive jet machining ajm is beneficial only for hard and brittle materials. Characteristics of abrasive slurry jet micromachining. Wjm can be used to cut softer materials like plastic, rubber or wood. Abstractthe paper presents an experimentalbased study of abrasive jet machining ajm considering the effect of changing process parameters. When these highvelocity abrasive particles are impinging onto the hard work pieces, it is possible to produce plastic deformation fracturing in the hard work materials also and this process is called as abrasive water jet machining. Pdf design and manufacturing of abrasive jet machine for drilling.
The abrasive awads 160 is conveyed by the pressure from the hopper to the cutting head. Abrasive jet machining ajm as explained non traditional machining process involves machining action by indirect contact between tool and work piece. Abrasive jet machining is a nontraditional machining process which is mostly used in machining of hardened metals. Seminar on abrasive waterjet machining nonpollution machining machining of eccentric sheave on cnc complete project report ebook free download doc. Influence of nozzle design and process parameters on surface roughness of cfrp machined by abrasive jet. You can download whole articles pdf at the end of the articles. Abrasives gas propulsion system supplies clean and dry air. Abrasive jet machining ajm is non conventional machining the removal of material from a workpiece by the application of a high speed stream of abrasive particles carried in gas medium from a nozzle. Water jet machining wjm is a mechanical energy based nontraditional machining process used to cut and machine soft and nonmetallic materials it involves the use of high velocity water jet to smoothly cut a soft workpiece. A free powerpoint ppt presentation displayed as a flash slide show on id. The fundamental principle of abrasive jet machining involves the use of a highspeed stream of abrasive particles carried by a highpressure gas or air on the work surface through a nozzle. Pdf analysis and parametric optimization of abrasive hot. Abrasive jet machining ajm is the process of material removal from a workpiece by the. Abrasive jet machining falls under a category of mechanical process or it is an unconventional and nontraditional manufacturing process.
Abrasive jet machining working, advantages, disadvantages and applications construction in abrasive jet machining, the gases employed are usually air and nitrogen. Apparatus for developing and handling an abrasive laden gas stream for abrasive jet machining, employing equipment for storage, feeding, and control of abrasive powder in a carrier jet delivered through an upright feed tube at relatively high pressure and velocity. It is similar to abrasive jet machining ajm in water jet machining, high velocity water jet is allowed to strike a given workpiece. Metal removal and kerf analysis in abrasive jet drilling of. Download abrasive water jet machining process pdf at the end of the article. The ajm process differs from conventional sand blasting in that the abrasive is much finer and the process parameters and cutting action are carefully controlled. Powder blasting, or abrasive jet machining, is a technique in which a particle jet typically al 2 o 3 particles of 330. The metal is removed due to erosion caused by the abrasive particles impacting the work surface at high speed. In ajm, air is compressed in an air compressor and. Pdf abrasive jet machining is one of the unconventional machining processes which, using various operations. Seminar abrasive jet machining full report download introduction to abrasive jet machining abrasive jet machining ajm is nontraditional manufacturing process. Abrasive jet machining ajm is a nontraditional machining process which operates work. Abrasive jet machining process, detail abrasive jet machining specifications, abrasive jet machining description, abrasive jet machining applications, features. Pdf wide application of abrasive jet machine ajm is found in machining hard and.
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